Connecting-rod bearing-box.



PATENTED MAY 15, 1906.

H. P. LIVERMORE. CONNECTING ROD BEARING BOX.

APPLICATION FILED JAN. 10, 1905.

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ammo STATES PATENT OFFICE.

Specification of Letters Patent.

Patented May 15, 1906.

Application filed January 10. 1905. Serial No. 240,414.

To all whom it may concern:

Be it known that l, HOMER F. LIVERMORE, a citizen of the United States, residing at the town of Brookline, in the county of Norfolk, Commonwealth of Massachusetts, have in vented certain new and useful Improvements in Connecting-Rod Bearing-Boxes, of which the following is a full, clear, and exact de scription.

This invention relates to connecting-rods for joining the crank to the beam in looms for conveying the throw to said beam. Such connecting-rod is usually attached to the said crank by means of a metal strap passing about the crank-pin and fastened to the said rod at its ends. The trouble with this arrangement is that such strap soon wears through and breaks where it contacts with the crank-pin and a new one has to be substituted therefor. Moreover, for the sake of economy said strap is made from iron or steel, and as the crank-pin is also of iron or steel the wear between the two, is very rapid.

The object of my invention is to provide such a strap with a bearing-box of difierent metal from that of which the former is composed in order to improve the wearing qualities thereof and which can also be readily replaced with a new one when it has become badly worn.

Referring to the drawings forming part of this specification, Figure 1 is a side view of the end of a connecting-rod rovided with my improvements, showing t e said crankpin in cross-section. Fig. 2 is a longitudinal central section of said strap. Fig. 3 is a plan view of said strap and rod end, and Fig. 4 is a perspective view of the removable bearingbox.

The reference-numeral 1 designates the connecting-rod, the end only of which is shown that is attached to the crank-pin 3. This rod is'preferably composed of wood and has its extremity shaped to terminally fit against the crank-pin. About the said crankpin is bent the sheet-metal strap 5, whose ends are fixed to said rod by means of suit able bolts or other fastening devices 9, assing through the slots 8 in said strap. ithin the bend 6 of said strap is secured asemi-annular box, preferably of brass,-10, which is drawn by said strap into contact with the crank-pin 3. To removably confine said box in place, I form each edge thereof with alug 11, preferably made by slitting said edges and bending out radially the parts between said slits, as shown in Fig. 4. In said strap are formed two openings 7, fitted to receive said lugs, and to thereby retain the said box in place. To insert said box, the strap ends are sprung outwardly and the box ends inwardly until said lugs can be pressed into said openings. Once in, said box remains seourely until either worn through or until it has been forcibly removed for renewal. The easiest way for removing said box is to press a small tool down against one of the lu ends until the latter is forced from its con ingopening. Inasmuch as the rod ends 2 and the said brass box 10 take all the wear, the straps 5 will last indefinitely, and as the latter are much more expensive than the brass boxes a great gain in economy is secured. Further, the frictional contact between the iron or steel crank-pin and the brass boxes being much less than that between said pin and the iron or steel straps, a considerable saving in power is secured, especially in a mill running a large number of looms.

It is customary to manufacture the rod ends 2 of the same width as the diameter of the crank pin or throw 3. To fit my improvement to such parts as are now in use, I double the strap ends inward, as shown in Figs. 1 and 3, for the purpose of rendering the inner surface of the box 10 practically con tinuous with the inner surface of the folded ends 5. This fills in the space otherwise left between the sides of the rod end and of the straps 5.

What I claim as my invention, and for which I desire Letters Patent, is as follows, to wit:

1. The combination withapin, of awooden connecting-rod fitted to abut against the curved surface of said pin, a strap assing about said pin and having its ends ed to said rod, and a semi-annular bearing-box located between said pin and strap; the lateral edges of said strap and box being substantially flush, and one of said members being formed with rojections entering openings in the other, su stantially as described.

2. The combination in a loom, of a crankpin, a wooden connecting-rod terminally fitted to said pin, a strap passing about said bin and having its ends secured to said rod,

4 In testimbny that I ciaim the foregoing in and a bearing-box located between said pin irention I have hereunto set my hand this and stra said box being formed with an 29th day of December, 1904.

outwardFy-projecting lug bent up from each I HOMER F. LIVERMORE. edge, and said strap being formed with open- Witnesses: ings to receive said lugs, substantially as de- F. H. WUEsT,

scribed. P. J. WALL. 

